Internal probe finds no equipment failure; operator removed from driving as riders report injuries.
SAN FRANCISCO — A September jolt that threw riders to the floor on San Francisco’s N-Judah line began when the operator appeared to fall asleep and the train entered a curve at roughly 50 mph, according to video and findings released by the city’s transit agency.
The San Francisco Municipal Transportation Agency said the Sept. 24 incident near Duboce Park occurred at 8:37 a.m. during the peak commute on a packed two-car train. Officials said their investigation is now complete and points to operator fatigue rather than brake or track problems. The case has renewed questions about staffing levels, split shifts and how the agency monitors safety-sensitive employees. The operator, whose name the agency withheld, was placed on non-driving status that day and remains off the controls.
Data recorders and footage show the train accelerating through the tunnel’s east portal, skipping a platform before the operator applied brakes and stopped, officials said. Passengers can be heard shouting as bodies tumble. “This was frightening for our customers and unacceptable,” Director of Transportation Julie Kirschbaum said, noting that staff contacted those who filed injury reports. One passenger reported a concussion, and several others described bruises and strains. Paramedics evaluated people at the scene, riders said.
Agency engineers examined the vehicles, speed-control systems and tracks and found they functioned as designed. Supervisors said they saw no sign of impairment by drugs or alcohol. The video, released under a public records request, appears to show the operator slumped forward before jolting awake. Officials said privacy rules prevent them from releasing personnel details or medical information. How many total injuries occurred remains unclear because some riders sought care later, according to the agency.
The N-Judah carries the most riders of any Muni rail route and includes a tight curve subject to reduced speeds. Transit experts say fatigue can erode reaction time and situational awareness, making curves and station approaches high-risk moments. Nationally, regulators have flagged the need for hours-of-service and fatigue-risk programs in transit, although binding federal limits for light-rail operators remain limited compared with freight rail and aviation.
SFMTA managers said they will hold a safety stand-down this month, audit schedule and overtime practices, and update training on speed compliance and emergency communications. The transportation board plans to discuss the case at an upcoming meeting and could direct new reporting requirements on near-misses and fatigue. No criminal probe has been announced. Disciplinary steps for the operator are proceeding under agency policy and labor agreements.
Riders described a mix of anger and relief. “I just remember the slam and people yelling to open the doors,” said commuter Ava Rodriguez. A longtime Sunset resident, David Choy, said he wants “boring, predictable rides” back. Union representatives said they support the investigation’s findings and want more rest opportunities between assignments.
The agency says the operator remains in a non-driving role while discipline and retraining are finalized. Managers expect to release a summary of corrective actions after the board briefing later this month.
Author note: Last updated November 12, 2025.